I got my Clarisonic with both the normal & sensitive skin brush heads but, have always had issues with enlarged pores, blackheads, etc. When these were introduced, I had to have them. I liked the brushes I received with the unit but wanted more. Well, these are really doing the trick! I have only been using the deep pore brush for a couple of weeks and I'm already seeing a difference in the texture of my skin and a reduction in both the size of my pores and the amount of blackheads (which are fairly small but SO annoying). I'm VERY happy with these brush heads!